BE517918A - - Google Patents
Info
- Publication number
- BE517918A BE517918A BE517918DA BE517918A BE 517918 A BE517918 A BE 517918A BE 517918D A BE517918D A BE 517918DA BE 517918 A BE517918 A BE 517918A
- Authority
- BE
- Belgium
- Prior art keywords
- aforementioned
- barrel
- faces
- face
- parallel
- Prior art date
Links
- 210000005069 ears Anatomy 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 239000000470 constituent Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 235000017788 Cydonia oblonga Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/43—Details of wedges
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE517918A true BE517918A (pm) |
Family
ID=154656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE517918D BE517918A (pm) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE517918A (pm) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3163011A (en) * | 1960-11-14 | 1964-12-29 | Karl M Groetschel | Connection for lagging irons |
-
0
- BE BE517918D patent/BE517918A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3163011A (en) * | 1960-11-14 | 1964-12-29 | Karl M Groetschel | Connection for lagging irons |
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